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package com.coremedia.iso.boxes;
import com.coremedia.iso.IsoTypeReader;
import com.coremedia.iso.IsoTypeWriter;
import com.googlecode.mp4parser.AbstractFullBox;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;
import static com.googlecode.mp4parser.util.CastUtils.l2i;
/**
* aligned(8) class SubSampleInformationBox
* extends FullBox('subs', version, 0) {
* unsigned int(32) entry_count;
* int i,j;
* for (i=0; i < entry_count; i++) {
* unsigned int(32) sample_delta;
* unsigned int(16) subsample_count;
* if (subsample_count > 0) {
* for (j=0; j < subsample_count; j++) {
* if(version == 1)
* {
* unsigned int(32) subsample_size;
* }
* else
* {
* unsigned int(16) subsample_size;
* }
* unsigned int(8) subsample_priority;
* unsigned int(8) discardable;
* unsigned int(32) reserved = 0;
* }
* }
* }
* }
*/
public class SubSampleInformationBox extends AbstractFullBox {
public static final String TYPE = "subs";
private long entryCount;
private List<SampleEntry> entries = new ArrayList<SampleEntry>();
public SubSampleInformationBox() {
super(TYPE);
}
public List<SampleEntry> getEntries() {
return entries;
}
public void setEntries(List<SampleEntry> entries) {
this.entries = entries;
entryCount = entries.size();
}
@Override
protected long getContentSize() {
long entries = 8 + ((4 + 2) * entryCount);
int subsampleEntries = 0;
for (SampleEntry sampleEntry : this.entries) {
subsampleEntries += sampleEntry.getSubsampleCount() * (((getVersion() == 1) ? 4 : 2) + 1 + 1 + 4);
}
return entries + subsampleEntries;
}
@Override
public void _parseDetails(ByteBuffer content) {
parseVersionAndFlags(content);
entryCount = IsoTypeReader.readUInt32(content);
for (int i = 0; i < entryCount; i++) {
SampleEntry sampleEntry = new SampleEntry();
sampleEntry.setSampleDelta(IsoTypeReader.readUInt32(content));
int subsampleCount = IsoTypeReader.readUInt16(content);
for (int j = 0; j < subsampleCount; j++) {
SampleEntry.SubsampleEntry subsampleEntry = new SampleEntry.SubsampleEntry();
subsampleEntry.setSubsampleSize(getVersion() == 1 ? IsoTypeReader.readUInt32(content) : IsoTypeReader.readUInt16(content));
subsampleEntry.setSubsamplePriority(IsoTypeReader.readUInt8(content));
subsampleEntry.setDiscardable(IsoTypeReader.readUInt8(content));
subsampleEntry.setReserved(IsoTypeReader.readUInt32(content));
sampleEntry.addSubsampleEntry(subsampleEntry);
}
entries.add(sampleEntry);
}
}
@Override
protected void getContent(ByteBuffer byteBuffer) {
writeVersionAndFlags(byteBuffer);
IsoTypeWriter.writeUInt32(byteBuffer, entries.size());
for (SampleEntry sampleEntry : entries) {
IsoTypeWriter.writeUInt32(byteBuffer, sampleEntry.getSampleDelta());
IsoTypeWriter.writeUInt16(byteBuffer, sampleEntry.getSubsampleCount());
List<SampleEntry.SubsampleEntry> subsampleEntries = sampleEntry.getSubsampleEntries();
for (SampleEntry.SubsampleEntry subsampleEntry : subsampleEntries) {
if (getVersion() == 1) {
IsoTypeWriter.writeUInt32(byteBuffer, subsampleEntry.getSubsampleSize());
} else {
IsoTypeWriter.writeUInt16(byteBuffer, l2i(subsampleEntry.getSubsampleSize()));
}
IsoTypeWriter.writeUInt8(byteBuffer, subsampleEntry.getSubsamplePriority());
IsoTypeWriter.writeUInt8(byteBuffer, subsampleEntry.getDiscardable());
IsoTypeWriter.writeUInt32(byteBuffer, subsampleEntry.getReserved());
}
}
}
@Override
public String toString() {
return "SubSampleInformationBox{" +
"entryCount=" + entryCount +
", entries=" + entries +
'}';
}
public static class SampleEntry {
private long sampleDelta;
private int subsampleCount;
private List<SubsampleEntry> subsampleEntries = new ArrayList<SubsampleEntry>();
public long getSampleDelta() {
return sampleDelta;
}
public void setSampleDelta(long sampleDelta) {
this.sampleDelta = sampleDelta;
}
public int getSubsampleCount() {
return subsampleCount;
}
public void setSubsampleCount(int subsampleCount) {
this.subsampleCount = subsampleCount;
}
public List<SubsampleEntry> getSubsampleEntries() {
return subsampleEntries;
}
public void addSubsampleEntry(SubsampleEntry subsampleEntry) {
subsampleEntries.add(subsampleEntry);
subsampleCount++;
}
public static class SubsampleEntry {
private long subsampleSize;
private int subsamplePriority;
private int discardable;
private long reserved;
public long getSubsampleSize() {
return subsampleSize;
}
public void setSubsampleSize(long subsampleSize) {
this.subsampleSize = subsampleSize;
}
public int getSubsamplePriority() {
return subsamplePriority;
}
public void setSubsamplePriority(int subsamplePriority) {
this.subsamplePriority = subsamplePriority;
}
public int getDiscardable() {
return discardable;
}
public void setDiscardable(int discardable) {
this.discardable = discardable;
}
public long getReserved() {
return reserved;
}
public void setReserved(long reserved) {
this.reserved = reserved;
}
@Override
public String toString() {
return "SubsampleEntry{" +
"subsampleSize=" + subsampleSize +
", subsamplePriority=" + subsamplePriority +
", discardable=" + discardable +
", reserved=" + reserved +
'}';
}
}
@Override
public String toString() {
return "SampleEntry{" +
"sampleDelta=" + sampleDelta +
", subsampleCount=" + subsampleCount +
", subsampleEntries=" + subsampleEntries +
'}';
}
}
}
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